Automatic winding take-off



Sept. 29, 1936. c. R. CROWTHER AUTOMATIC WINDING TAKE-OFF Filed Oct. 3, 1934 /0 I," o I Cecil Richard Cruwther.

INVENTOR ATTOi 2N EYS Patented Sept. 29 1936 AUTOMATIC WINDING TAKE-OFF Cecil Richard Crowther, Pennside Hills, near Reading, Pa., assignor to .Wyomissing Glazed Paper Company, West Reading, Pa., a corporation of Pennsylvania I Application October 3,

3 Claims.

My invention relates to machines for treating a roll of paper or the like, and more particularly to an automatic winding take-off mechanism for the progressively fed paper adapted, by main taining a regulated slack loop in the paper on its way to the take-up roll, to prevent binding of the paper under treatment.

In certain machines, particularly in fiinting machines for color coated paper of the nature disclosed in C. M. Hallmans Patent No. 1,357,234 issued November 2, 1920 to. the assignee of my present invention, a length of slack or loose loops has been maintained between the flinting operation and the winding of the paper on a roll so as to permit free movement laterally of the paper under treatment, such necessity making an ordinary automatic winding take-up mechanism impracticable. The common practice heretofore has been to allow free accumulation of the fed paper in a container, with periodic manual turning of the wind-up roll; this practice however being unsatisfactory as req ng frequent tention of the operator and harm to the accumulated paper loops even with attentive watching.

The object of my present invention is to provide an automatic winding take-off attachment adapted at all times to maintain a controlled and orderly progress of the paper to the winding roll with provision for any necessary free lateral movement of the paper provided for by a regulated slack loop therein between the treating feed point and the wind up roll, so that such lateral movement will be absorbed before the paper reaches the winding roll; and it consists in the improved winding take-off mechanism hereinafter more fully described in connection with the accompanying drawing, and its novel'features are specifically set forth in the appended claims.

. Fig. 1 indicates, in a diagrammatic side elevation, the discharge end of amachine for treating a roll of progressively fed paper, and shows a preferred embodiment of my improved slackloop regulating winding take-off mechanism.

Fig. 2 is a corresponding fragmentary end view of the disclosure in Fig. 1. r

Fig. 3 is a separate enlarged side view of the ratchet drive mechanism for the winding roll, showing the pawl held in normal disengaging position.

Fig.4 is a corresponding end view of the disclosure in Fig. 3. 1

Referring to the drawing, 5 indicates the discharge end of a side frame of a paper treating machine, and 6 a supporting end standard there- 1934, serial No. 746,683

for. An end feed roll is indicated at 1, driven in any convenient manner as heretofore and not indicated, and the paper indicated by dotted line I3, is held in engagement with roller 1, as by friction roller 8, and is shown in the drawing as having a depending slack loop l3 carrying a slack-regulating roller 9, with the paper end riding over a guide roller If] to the winding takeoff roll or drum ll. As recognized in this class of machine the paper l3 under treatment must be free to laterally reciprocate more or less for proper commercial results, and the loop I 3 is therefore provided of a length sufficient to absorb this lateral movement before the feeding paper reaches the wind-up roll, where such lateral movement is not only not wanted but is not possible. The roller 9 is therefore shown as having its axle l2 loosely projecting through a guide slot in a standard IS, in which slot the. roller may freely move laterally as required and is also vertically movable as determined by the slack loop I3 formed by the paper fed over feed roll 1, Only one end standard I5 is shown, but it will be understood the opposite end of the roller 9 is guided in a similar or equivalent guide slot so the roller may maintaina horizontal position.

By means of the slack-regulating roller 9, above mentioned, I purpose controlling a regulated and orderly traversed loop length of paper slack between the feed roll 1 and winding roll or drum l l sufficient in length to fully absorb the lateral movement of the paper without harmful binding action on its treating point; and with this in view I have shown an automatic drive mechanism for the winding roll II, with means for controlling its intermittent winding rotations as will now be fully described.

As shown in the drawing, the roll or drum H has its axle 20 mounted in a suitable bearing 2| on standard 6, with its end projecting and fixedly carrying a ratchet drive, gear 22, positioned between radially swinging brackets 23 and 24 loosely mounted on said axle extension. The drawing shows only one end of roll H, but it will be understood its axle 20 has a similar or equivalent bearing at its opposite end, but does not necessarily carry any drive gear.

Swinging bracket 23 is shown as having two spaced pivot studs 25 and 26, the former mounting a gear driving pawl 27, and the latter mounting one end of a link rod 28, the opposite end of which has an eccentric connection to machine driven shaft 29, to oscillate bracket 23, whereby pawl 27 will rack gear 22 to windingly rotate r 11 H. Shaft 29 constantly turns during machine operation and tends to constantly wind roll I I, requiring, for my present purposes, provision for disengaging the pawl 2! from its engagement with gear 22 at intermittent intervals as determined by the slack loop desired to be maintained. Timed drive of roll ll would provide changing winding due to the varying roll diameter as the paper is wound thereon.

Swinging bracket 24 on axle 20 is shown as having a curved extension 30 overlying pawl 21, which latter it will be noted is wider than its gear 22, and the inner curved edge 3| of said extension 30 is adapted to engage the end of pawl 21 and hold the latter in raised disengaged position so that when oscillated as above described it will not drive gear 22. Bracket 24 is shown with a pivot stud for one end of a link rod 36, the other end of the latter having a pivoted connection 31 at an intermediate point in one arm 38 of a bell-crank lever, pivoted at 39 to the standard l5, and its other winding control arm 40 arranged to swing across the guide slot in said standard as shown. A spring 4| attached to the end of arm 38 and to a fixed eye 42 on standard 6 biases said bell crank, and the latter through link arm 35 holds bracket 24 so as to contact its edge 31 with the pawl 21. Oscillation of the pawl, as described, oscillates bracket 24 and bell crank arm 38 to swing winding control arm 40 of the latter back and forth across the guide slot in standard l5.

As the paper I3 is fed from the machine by roll 1, loop I3 is lengthened lowering roller 9 until its axle l2 falls behind the swinging winding control arm 40 to arrest its oscillation and at the same time arrest oscillation of bracket 24. The arresting of oscillation of bracket 24 is, preferably, but momentary, sumcient only to free pawl 21 to engage the teeth of gear 22; bracket 24 resuming oscillation with the pawl as it turns gear 22, due to the pawl being wider than said gear so as to contact said bracket. This resumption of oscillation of bracket 24, after but a momentary pause, swings control arm 40 away from axle l2 and frees the latter for vertical movement as the roll H takes up the loop l3 and this preferable operation removes all friction by control arm 48 on the axle l2 and prevents any tearing strain on the loop l3 Pawl 21 may be momentarily freed several times before loop I3 is reduced suificiently to lift axle l2 out of the path of swing of control arm 40, but said axle is freed after each such momentary contact by said control arm. Due to bias of spring 4|, the bell crank 3840 and bracket 24 oscillate with bracket 23, except as their joint oscillation is momentarily arrested as above described; and when axle I2 is raised out of the path of swing of arm 40 by Winding of loop l3 on roll II, the winding movement will cease until the axle I2 is again lowered into the path of swing of control arm 40 to automatically re-start the winding mechanism. 7

The loop l3 will then be maintained between a maximum and minimum length, but always sufficient to permit free lateral movement of roller 9 with the treated paper without transfer of such movement to the roll ll. And the freeing of axle l2 after each momentary contact of control arm 40, leaves the latter free to move during the winding take-up of loop l3, removing all danger of tearing strain during such winding take-up. And the automatic control requires no attention of an operator and insures improved results with reduced costs. While I have shown and described my improved automatic winding take-up mechanism as applied to a paper treating machine, it will be understood it may be equally useful to the take-upwinding of other roll material. And the particular mechanism shown in the drawing and above fully described, may of course be varied, the essential requirements being automatic control of the winding in accordance with the position of the slack-loop roller, and freedom of the latter to move laterally with the treated material and without frictional resistance during winding take-up, as specifically defined in the appended claims.

What I claim is:

1. In combination with a machine for treating a roll of paper or the like, having a power drive for progressively feeding the paper, and a winding take-off roll for the fed paper means to maintain a regulated slack in the paper on its way to the take-up r011 comprising, means for winding said take-up roll, means including a reciprocated control-arm adapted to engage and disengage said winding means, and a slack-suspended regulating roller movable into position to arrest recip rocative movement of said control arm.

2. In'combination with a machine for treating a roll of paper or the like, having a power drive for progressively feeding the paper, and a winding take-off roll for the fed paper, means to maintain a regulated slack in the paper on its way to the take-up roll comprising, an oscillating winding mechanism for said take-up roll, wind engaging and disengaging means therefor normally held in disengaging position by synchronous oscillation with said winding mechanism, and a shiftable slack-regulating roller intermittently movable into arresting engagement with said oscillated disengaging means to operatively engage said roll winding mechanism.

3. In combination with a machine for treating a roll of paper or the like, having a power drive for progressively feeding the paper, and a winding take-off roll for the fed paper, means to maintain a regulated slack in the paper on its way to the take-up roll comprising, a ratchet drive gear for said take-off roll, an oscillated drive pawl for said gear, a paper-carried slackregulating roller, guide-ways for said roller adapted to permit roller movement as determined by paper slack variations, and drive control mechanism comprising a control arm swingable across said roller guide way and a biased pawl engaging member normally holding said pawl disengaged from said ratchet gear; said control arm and pawl engaging member being oscillated by said oscillated pawl, and said slack-regulating roller having an extension adapted to engage said control arm when said roller is carried by a maximum of desired slack to arrest oscillation of said pawl engaging member whereby the latter may engage its ratchet gear to drive said take-up roll.

CECIL RICHARD CROWTHER. 

